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  1. Pluto - Wikipedia

    Pluto was discovered in 1930 by Clyde W. Tombaugh, making it the first known object in the Kuiper belt. It was immediately hailed as the ninth planet. However, [16]: 27 its planetary …

  2. Pluto Facts - NASA Science

    Apr 22, 2025 · Discovered in 1930, Pluto was long considered our solar system's ninth planet. But after the discovery of similar worlds deeper in the Kuiper Belt, Pluto was reclassified as a …

  3. Pluto discovered | February 18, 1930 | HISTORY

    Mar 3, 2010 · Pluto, once believed to be the ninth planet, is discovered at the Lowell Observatory in Flagstaff, Arizona, by astronomer Clyde W. Tombaugh.

  4. History of Pluto - Lowell Observatory

    On February 18, 1930, Clyde Tombaugh discovered Pluto. Thus kicked off a hectic time for the entire observatory staff, as they worked furiously to gather as much data as possible about the …

  5. 10 Important Dates in Pluto History | Britannica

    This Encyclopedia Britannica list highlights 10 important dates in the exploration of Pluto, from its discovery in 1930 to the flyby of New Horizons in 2015 and beyond.

  6. The Story of How Pluto Was Discovered 95 Years Ago

    Mar 29, 2025 · On February 18, 1930, astronomer Clyde Tombaugh discovered Pluto at the Lowell Observatory. The search began in 1929, using the information gathered by both Lowell …

  7. Clyde Tombaugh: The astronomer who discovered Pluto - Space

    In 1928, the amateur astronomer was offered a job at Lowell Observatory in Arizona, where he discovered Pluto. In 1934, he married Patricia Edson. They had two children, Annette and Alden.

  8. Pluto: The Discovery of a Planet - The Planetary Society

    Feb 18, 2005 · To mark the 75th anniversary of the discovery of the planet Pluto, The Planetary Society presents to its readers the remarkable story of the discovery.

  9. Pluto, the underdog of the solar system, was discovered 95 years …

    Feb 17, 2025 · After his death, Lowell astronomer Clyde Tombaugh found Pluto. The once planet, now dwarf planet, broke the mold for our solar system but continues to be a planetary favorite …

  10. Clyde Tombaugh - Wikipedia

    Clyde William Tombaugh (/ ˈtɒmbaʊ /; February 4, 1906 – January 17, 1997) was an American astronomer and telescope maker, best known for discovering Pluto in 1930, marking the first …